Data set compositor node More...
#include <LDM/nodes/SoDataCompositor.h>
Public Types | |
enum | DataType { UNSIGNED_BYTE = SbDataType::UNSIGNED_BYTE , UNSIGNED_SHORT = SbDataType::UNSIGNED_SHORT , UNSIGNED_INT32 = SbDataType::UNSIGNED_INT32 , SIGNED_BYTE = SbDataType::SIGNED_BYTE , SIGNED_SHORT = SbDataType::SIGNED_SHORT , SIGNED_INT32 = SbDataType::SIGNED_INT32 , FLOAT = SbDataType::FLOAT } |
Supported data types. More... | |
enum | PreDefCompositor { NONE , MINUS , ADD , MULTIPLY } |
Predefined compositor. More... | |
Public Member Functions | |
virtual SoType | getTypeId () const |
Returns the type identifier for this specific instance. | |
SoDataCompositor () | |
Constructor. | |
virtual void | compose (int numDataSet, const SbVec3i32 &tileDimension, int *vdid, SoBufferObject **inputBuffer, SoBufferObject *outputBuffer) |
The compose method can be overridden in a subclass to specify a custom composition. | |
virtual void | compose (int numDataSet, const SbVec3i32 &tileDimension, int *vdid, SoBufferObject **inputBuffer, SoDataCompositor::DataType *dataTypes, SoBufferObject *outputBuffer) |
Same as the compose method described above with one additional parameter: dataTypes is an array of SoDataSet::dataType giving the data type of each input buffer (e.g., inputBuffer[0] is of data type dataTypes[0]). | |
int | getDataSize () const |
Returns number of bytes for output datum. | |
int | getNumSigBits () const |
Returns the output number of significant bits. | |
DataType | getDataType () const |
Returns the output data type. | |
Deprecated | |
virtual SoDEPRECATED void | compose (int numDataSet, const SbVec3i32 &tileDimension, int *vdid, void **inputBuffer, void *outputBuffer) |
virtual SoDEPRECATED void | compose (int numDataSet, const SbVec3i32 &tileDimension, int *vdid, void **inputBuffer, SoDataCompositor::DataType *dataTypes, void *outputBuffer) |
Public Member Functions inherited from SoNode | |
virtual void | setOverride (const SbBool state) |
Turns the override flag on or off. | |
virtual SbBool | isOverride () const |
Returns the state of the override flag. | |
virtual SoNode * | copy (SbBool copyConnections=FALSE) const |
Creates and returns an exact copy of the node. | |
virtual SbBool | affectsState () const |
Returns TRUE if a node has an effect on the state during traversal. | |
virtual void | touch () |
Marks an instance as modified, simulating a change to it. | |
Public Member Functions inherited from SoFieldContainer | |
void | setToDefaults () |
Sets all fields in this object to their default values. | |
SbBool | hasDefaultValues () const |
Returns TRUE if all of the object's fields have their default values. | |
SbBool | fieldsAreEqual (const SoFieldContainer *fc) const |
Returns TRUE if this object's fields are exactly equal to fc's fields. | |
void | copyFieldValues (const SoFieldContainer *fc, SbBool copyConnections=FALSE) |
Copies the contents of fc's fields into this object's fields. | |
SoNONUNICODE SbBool | set (const char *fieldDataString) |
Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format. | |
SbBool | set (const SbString &fieldDataString) |
Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format. | |
void | get (SbString &fieldDataString) |
Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string. | |
virtual int | getFields (SoFieldList &list) const |
Appends references to all of this object's fields to resultList, and returns the number of fields appended. | |
virtual int | getAllFields (SoFieldList &list) const |
Returns a list of fields, including the eventIn's and eventOut's. | |
virtual SoField * | getField (const SbName &fieldName) const |
Returns a the field of this object whose name is fieldName. | |
virtual SoField * | getEventIn (const SbName &fieldName) const |
Returns a the eventIn with the given name. | |
virtual SoField * | getEventOut (const SbName &fieldName) const |
Returns the eventOut with the given name. | |
SbBool | getFieldName (const SoField *field, SbName &fieldName) const |
Returns the name of the given field in the fieldName argument. | |
SbBool | enableNotify (SbBool flag) |
Notification at this Field Container is enabled (if flag == TRUE) or disabled (if flag == FALSE). | |
SbBool | isNotifyEnabled () const |
Notification is the process of telling interested objects that this object has changed. | |
virtual void | setUserData (void *data) |
Sets application data. | |
void * | getUserData (void) const |
Gets user application data. | |
Public Member Functions inherited from SoBase | |
virtual SbName | getName () const |
Returns the name of an instance. | |
virtual void | setName (const SbName &name) |
Sets the name of an instance. | |
void | setSynchronizable (const bool b) |
Sets this to be a ScaleViz synchronizable object. | |
bool | isSynchronizable () const |
Gets the ScaleViz synchronizable state of this object. | |
Public Member Functions inherited from SoRefCounter | |
void | ref () const |
Adds a reference to an instance. | |
void | unref () const |
Removes a reference from an instance. | |
void | unrefNoDelete () const |
unrefNoDelete() should be called when it is desired to decrement the reference count, but not delete the instance if this brings the reference count to zero. | |
int | getRefCount () const |
Returns current reference count. | |
void | lock () const |
lock this instance. | |
void | unlock () const |
unlock this instance. | |
Public Member Functions inherited from SoTypedObject | |
SbBool | isOfType (const SoType &type) const |
Returns TRUE if this object is of the type specified in type or is derived from that type. | |
template<typename TypedObjectClass > | |
SbBool | isOfType () const |
Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class. | |
Static Public Member Functions | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
static SbBool | isDataSigned (DataType dataType) |
Returns TRUE if the given data type is a signed integer data type. | |
Static Public Member Functions inherited from SoNode | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
static SoNode * | getByName (const SbName &name) |
A node's name can be set using SoBase::setName(). | |
static int | getByName (const SbName &name, SoNodeList &list) |
A node's name can be set using SoBase::setName(). | |
Static Public Member Functions inherited from SoFieldContainer | |
static SoType | getClassTypeId () |
Returns the type of this class. | |
Static Public Member Functions inherited from SoBase | |
static SoType | getClassTypeId () |
Returns type identifier for this class. | |
Static Public Member Functions inherited from SoTypedObject | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
Public Attributes | |
SoSFEnum | dataType |
Data type of the final composed buffer. | |
SoSFShort | numSigBits |
Number of significant bits of the final composed datum. | |
SoSFBool | rgbaMode |
Final composed buffer contains RGBA values (default is FALSE). | |
SoSFEnum | preDefCompositor |
Predefined composition method. | |
SoSFBool | convert |
If the convert field is TRUE, LDM will call the compose method after automatically converting data to the final data type if necessary. | |
The SoDataCompositor node allows you to combine multiple data sets in memory instead of having to store the combined data sets on disk. For example, it can be used to visualize the result of the difference between two data sets. Notice: The SoDataCompositor cannot be used for unary operation (the number of data set used with a data compositor must be stricly greater than one). Unary operation can be performed using the SoLDMDataTransformCB (see SoDataSet node).
NOTE: This node is only useful in LDM mode.
A number of rules apply to the use of SoDataCompositor:
For example, to realize the difference of two data sets, only the SoDataCompositor node, the SoDataSet nodes, and the rendering primitive node must be inserted under the SoMultiDataSeparator node created to handle the composition.
Each SoDataSet following the compositor must have the same exact dimensions. However, the data set nodes can have different voxel data types (bytes per voxel). The final voxel data type is specified by the data compositor node through the dataType field.
If the rgbaMode field is set to TRUE, then dataType and numSigBits are ignored, and the output data is generated as UNSIGNED_INT32 with 32 significant bits.
The SoDataCompositor node offers different default composition operators (see preDefCompositor) but it is possible to create a customized operator by subclassing the node and redefining one of the compose methods. To use the custom operator, the preDefCompositor field must be set to NONE.
dataType | UNSIGNED_BYTE |
numSigBits | 0 |
rgbaMode | FALSE |
preDefCompositor | MINUS |
convert | TRUE |
SoDataSet, SoLDMDataTransform, SoVolumeTransform
Definition at line 110 of file SoDataCompositor.h.
Supported data types.
Enumerator | |
---|---|
UNSIGNED_BYTE | unsigned byte |
UNSIGNED_SHORT | unsigned short |
UNSIGNED_INT32 | unsigned int (32bits) |
SIGNED_BYTE | signed byte |
SIGNED_SHORT | signed short |
SIGNED_INT32 | signed int (32bits) |
FLOAT | float |
Definition at line 124 of file SoDataCompositor.h.
Predefined compositor.
Enumerator | |
---|---|
NONE | none |
MINUS | minus |
ADD | add |
MULTIPLY | multiply |
Definition at line 168 of file SoDataCompositor.h.
SoDataCompositor::SoDataCompositor | ( | ) |
Constructor.
|
virtual |
The compose method can be overridden in a subclass to specify a custom composition.
Inputs are:
NOTE: For compatibility purposes, if this method is not redefined then the version with void* parameters instead of SoBufferObject* will be used.
|
virtual |
Same as the compose method described above with one additional parameter: dataTypes is an array of SoDataSet::dataType giving the data type of each input buffer (e.g., inputBuffer[0] is of data type dataTypes[0]).
This compose method is called if the convert field is set to FALSE. In this case LDM does not automatically convert data to the final data type, and the application is responsible for doing the conversion if necessary.
NOTE: For compatibility purposes, if this method is not redefined then the version with void* parameters instead of SoBufferObject* will be used.
|
virtual |
|
virtual |
|
static |
Returns the type identifier for this class.
int SoDataCompositor::getDataSize | ( | ) | const |
Returns number of bytes for output datum.
DataType SoDataCompositor::getDataType | ( | ) | const |
Returns the output data type.
int SoDataCompositor::getNumSigBits | ( | ) | const |
Returns the output number of significant bits.
|
virtual |
Returns the type identifier for this specific instance.
Reimplemented from SoNode.
Returns TRUE if the given data type is a signed integer data type.
Note: If rgbaMode is TRUE, then the data is considered to be UNSIGNED_INT32 (not signed).
SoSFBool SoDataCompositor::convert |
If the convert field is TRUE, LDM will call the compose method after automatically converting data to the final data type if necessary.
Otherwise the compose method is called without conversion and the application is responsible for handling the conversion. Default is TRUE.
Definition at line 196 of file SoDataCompositor.h.
SoSFEnum SoDataCompositor::dataType |
Data type of the final composed buffer.
Use enum DataType. Default is UNSIGNED_BYTE. NOTE: If rgbaMode is TRUE, this field is ignored and the output buffer is UNSIGNED_INT32.
Definition at line 147 of file SoDataCompositor.h.
SoSFShort SoDataCompositor::numSigBits |
Number of significant bits of the final composed datum.
Default is 0 meaning all bits are significant. If this field is set to 24 on an UNSIGNED_INT32 data type, only the lowest 24 bits will be taken into account when creating textures.
Definition at line 156 of file SoDataCompositor.h.
SoSFEnum SoDataCompositor::preDefCompositor |
Predefined composition method.
Use enum PreDefCompositor. Default is MINUS. If preDefCompositor is set to NONE, then LDM will call one of the virtual compose methods. Otherwise it will use the specified composition operator.
Definition at line 187 of file SoDataCompositor.h.
SoSFBool SoDataCompositor::rgbaMode |
Final composed buffer contains RGBA values (default is FALSE).
If set to TRUE then the dataType and numSigBits fields are ignored and the output data is UNSIGNED_INT32 with 32 significant bits.
Definition at line 163 of file SoDataCompositor.h.